text: EDM is often compared to electrochemical machining.
  Advantages of EDM include:
  *Ability to machine complex shapes that would otherwise be difficult to produce with conventional cutting tools.
  *Machining of extremely hard material to very close tolerances.
  *Very small work pieces can be machined where conventional cutting tools may damage the part from excess cutting tool pressure.
  *There is no direct contact between tool and work piece. Therefore, delicate sections and weak materials can be machined without perceivable distortion.
  *A good surface finish can be obtained; a very good surface may be obtained by redundant finishing paths.
  *Very fine holes can be attained.
  *Tapered holes may be produced.
  *Pipe or container internal contours and internal corners down to R 0.001".
  Disadvantages of EDM include:
  *Difficulty finding expert machinists.
  *The slow rate of material removal.
  *Potential fire hazard associated with use of combustible oil based dielectrics.
  *The additional time and cost used for creating electrodes for ram/sinker EDM.
  *Reproducing sharp corners on the workpiece is difficult due to electrode wear.
  *Specific power consumption is very high.
  *Power consumption is high.
  *"Overcut" is formed.
  *Excessive tool wear occurs during machining.
  *Electrically non-conductive materials can be machined only with specific set-up of the process.